術後有効レンズ位置と屈折の変化、3種類の眼内レンズによる比較
Xi-Xia Ding1,2,3, Lin-Feng Xiang1,2,3, Wen-Tao Tong1,2,3
1Eye Hospital, Wenzhou Medical University, Wenzhou 325027, Zhejiang Province, China.
International journal of ophthalmology
|January 23, 2026
まとめ
SN6CWS眼内レンズ(IOL)は、白内障手術後に優れた効果的なレンズ位置(ELP)の安定性を示した。他のIOLとは異なり、有意な遠視シフトなしに一貫した屈折結果を維持した。
科学分野:
- 眼科学; 生体医工学; 光学
背景:
- 白内障手術には、視力回復のための眼内レンズ(IOL)の挿入が伴う。正確なIOL位置と安定した屈折結果は、視機能にとって重要である。IOLデザインの違いは、術後の有効レンズ位置(ELP)と屈折安定性に影響を与える可能性がある。
研究 の 目的:
- 白内障手術後の3種類の異なる眼内レンズ(IOL)の効果的なレンズ位置(ELP)と屈折結果を比較する。SN6CWS、MI60、Aspira-aA IOLの術後安定性を評価する。
主な方法:
- IOLの種類に基づいて3つのグループに分けられた150人の白内障患者(189眼)を対象とした前向き研究:SN6CWS(A群)、MI60(B群)、Aspira-aA(C群)。有効レンズ位置(ELP)は、術後1日、1週、1ヶ月、3ヶ月の時点でスイープソース光干渉断層計(SS-OCT)を使用して測定された。主観的屈折は、術後1週、1ヶ月、3ヶ月で評価された。
主要な成果:
- SN6CWS IOL(A群)は、術後3ヶ月以内にMI60(B群)およびAspira-aA(C群)IOLと比較して、有意に低い二乗平均平方根ELP(ELPRMS)を示した。SN6CWS IOL群では、すべての時点において屈折結果は安定していた。MI60およびAspira-aA IOL群では、術後1週から3ヶ月の間に有意な遠視シフトが観察された。
結論:
- SN6CWS IOLは、術後初期3ヶ月で最もELP安定性を示した。MI60およびAspira-aA IOLは、術後1週から3ヶ月の間に有意な遠視シフトを示した。SN6CWS IOLは、術後初期においてMI60およびAspira-aA IOLと比較して、予測可能な屈折結果と優れた位置安定性を提供する。
関連する概念動画
Types of Global Positioning System Surveys
363
GPS surveying methods vary in application, accuracy, and data collection techniques, catering to diverse surveying and mapping needs. Static GPS, kinematic GPS, and real-time kinematic (RTK) surveying are widely used. Each technique offers distinct advantages.Static GPS involves placing one receiver at a known reference point and another at the target point. It collects exact positional data by observing multiple satellite ranges over an extended period, achieving centimeter-level accuracy for...
363
Position-effect Variegation
7.0K
In 1928, a German botanist Emil Heitz observed the moss nuclei with a DNA binding dye. He observed that while some chromatin regions decondense and spread out in the interphase nucleus, others do not. He termed them euchromatin and heterochromatin, respectively. He proposed that the heterochromatin regions reflect a functionally inactive state of the genome. It was later confirmed that heterochromatin is transcriptionally repressed, and euchromatin is transcriptionally active chromatin.
7.0K
Framing Effects
7.9K
Information is everywhere and its presentation—such as how and when items are presented—can impact our perceptions and decisions surrounding the info. This broad concept umbrellas framing effects—influences that occur due to the way information is framed in its appearance, whether it’s purely the order or the specific wording of a message. Let’s take a look at numerous ways in which two versions of something can objectively say the same thing, yet we respond in...
7.9K
Positive Regulator Molecules
134.7K
To consistently produce healthy cells, the cell cycle—the process that generates daughter cells—must be precisely regulated.
134.7K
Serial Position Effect
534
The serial position effect is a cognitive phenomenon where individuals are more likely to recall the first and last items in a list compared to those in the middle. This effect is divided into the primacy effect and the recency effect. The primacy effect is observed when the initial items in a list are remembered better. This occurs because these items are rehearsed more frequently or receive more elaborative processing, allowing them to be encoded into long-term memory more effectively. For...
534
Influence of Earth's Curvature and Atmospheric Refraction on Leveling
904
During leveling, the Earth's curvature and atmospheric refraction introduce deviations in the line of sight from a true horizontal reference. When the line of sight is leveled, it remains perpendicular to the plumb line only at a single point. Beyond this, it deviates due to the Earth’s curvature, represented by the correction C. For a sight distance D, the deviation can be derived using the relationship:This relationship shows that the deviation increases quadratically with distance. Over a...
904


